Was just going to list U/H but heck, have some of the other stuff sitting around too- I'm looking for some Energy (gets expensive building fighters) so I'll trade the following:

U/H/I: 4:1 for E
G 5:1 for E

If you're looking to get rid of troops, I'll go
U/H/I: 5:1 for T
G 6:1 for T

I'd even take V
U/H/I: 2.5:1
G 3:1

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Assaults accidentally crashed: 2